Windows ODBC and a Router obstacle?

I am trying to connect to my PG 8.2 db server from MS Access from a remote location.

I had configured PG to trust all connections from this location.

i.e. in PG_HBA.conf I added a line containing:

host    all    all    ip-address/32   trust

(and restarted the server)

But I cannot get a connection.

Could there be a problem with the local router in this location?  What should I look for in the router set-up?

JPD657